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(fio Model.) 5 SheetsSheet 1. E. WESTON.

ELECTRIC ARC LAMP.

No. 271,173. Patented 1222,23, 1883.

(No Model.) 5 Sheets-Sheet. 2.

- E. WESTON.

ELECTRIC ARC LAMP. No. 271,173. Patented Jan.23, 1883.

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(No Model.) 5 Sheets-Sheet 3.

E. WESTON.

BLEOTRIG ARC LAMP.

No. 271,173. Patented Jan.23-, 1883.

"(No Model.) 5 Sheets-Sheet 4,

E. WESTON.

' ELEGTRIG ARC LAMP.

No. 271,173. Patented Jan.23, 1883.

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' ELEGTRZIZQFAIV% LAMP. No. 271,173. Y 57' Patented Jan.23, 1883.

UNITED STATES PATENT OEEIcE.

EDWVARD 'WESTON, OF NEWARK, NEW JERSEY,'ASSIGNO R TO THE UNITED STATES ELECTRIC LIGHTING COMPANY, OF NEIV YORK, N. Y.

ELECTRIC-ARC LAMP.

SPECIFICATION forming part of Letters Patent No. 271,173, dated January 23, 1883. Application filed August 31, 1882. (N model.)

To all whom it may concern Be it known that I, EDWARD WEsToN, a subject of the Queen of Great Britain, and resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Electric Lamps, of which the following is a specification, reference being had to the drawings accompanying and forming a part of the same.

IO My invention relates to electric-arc lamps; and it consists in improvements in the lamp frame or casing, said improvements involving a novel means of mounting the lamp-regulatiug mechanism in the frame; secondly, an inclosing casing for the feed mechanism and upper carbon-holder, of improved construction; third, the combination, with said casing, of a globe-holder of novel design, and also other features, the nature of which will be more fully hereinafter set forth.

In the accompanying drawings I have illustrated my invention as applied to a lamp invented and elsewhere fully described by me, such illustration being designed to exhibit the manner in which the invention is or may be applied to arc-lamps generally, without reference to their particular character or design.

Figure 1 is a view in elevation of a lamp and frame constructed in accordance with my invention. Fig. 2is a central vertical section of the upper portions of the casing with the regulating mechanism contained therein. Fig.3 is a similar view of the lower portions of the frame, with the carbons, globe-holder, and connections shown in elevation. Fig. 4 is a vertical section of the upper frame and casing, taken at right angles to that of Fig. 2. Fig. 5 is a top view of the box or casing for containing the feed mechanism. Fig.6 is a section on line x 00 of Fig. 4. Fig. 7 is a plan view of the under side of the portion of the frame comprising the globe-holding devices.

Similar letters of reference indicate corresponding parts in the several figures.

The letter A designates a box or casing, and B B bars terminated by a ring, 1), extending from the bottom of the box. The box A in the present caseis rectangularin shape, though it may be otherwise, as it is designed to conform to the general shape of the feed mechanism which it contains. The front and rear of the box A may both or either be independent of the remaining sides, which, together with the bars B B and ring I), are cast in one piece. The sides of case A have flanges, as shown at a. a, to which aboard or plate, C, provided with suspending-hooks, is clamped.

Plate C is perforated for the passage of the carbon-holder or rod, and over this perforation is secured a tube, D, by which the lamp may be suspended, if necessary, though a second plate, C. containing suspendinghooks, circuit-breakers, or other devices, and secured to a fixed support, as elsewhere explained by me, is by preference employed for this purpose.

The rods or bars B B and ring I) constitute a frame, which in any convenient manner is inclosed by a tube or casing, that may be slipped overitfrom below when circumstances permit, or secured to the bars B B in sections. In the present case this casing is oval in cross-section, and is formed partly by a door, B, and partly by a simple plate, C, bentinto shape and secured to the bars B B. The material used for this purpose is sheet-brass, though tin or iron may be employed.

To the ring I) is bolted a circular metal frame, consisting of a ring, 0, a circular band or ring, E, and connectingpieces 0. The parts of the frame thus far described are so designed that they may all be cast in one piece, though in practice it will be found desirable to cast the circular frameindependently and bolt it to the ring I), as shown.

To ears extending from the ring E are secured, with intervening washers of insulating material, the flat rods F F, the lower ends of which are bent to form a U-shaped frame, and are joined to an annular plate or seat,f, in which is set a carbon-holder, Gr. Near their upper ends rods F F are cut away or bent in, as shown atff.

Over the rods F F is passed a metal ring, H, flanged and provided with screws h, by means of which a globe with a flanged open- 5 iug may be secured to it. Projecting inwardly from ring H are guides g g, in which the rods F F slide whertthe ring is raised or lowered.

L L are pins projecting from the ring H at points to register with slotted blocks M on the ring E,-the lugs and rings together forming ordinary bayonet-joints or catches.

Stops m m are fastened to the rods F F to limit the downward movement of the ring B. When the ring 11 is raised the guides cause the pins L to enter the slots or grooves in the blocks M. If the ring be raised to its fullest extent, or so that the guidesgg come opposite the cut-away portions ff of the rods F F, the ring H may be turned, causing the pins to occupy the position shown in dotted lines in Fig. 7 and locking the ring H in position.

The feed mechanism for the above-described case may, as above stated,beof various kinds. That shown consists, in the main, of a rotary brake-wheel, It, positively geared to the carboncarrier T, a pivoted frame, in which the brake is mounted, a brake-lever, also carried by the frame, a fixed stop, with which the end of the brake-lever comes in contact, a pivoted arm attire-lever, and electro-helices, with armatures S S for imparting the requisite movement to the several parts named.

A standard, V, supporting the pivoted lever and its appurtenances, and the coils of the magnets are mounted on a metal plate, N, which is bolted in the bottom of the box A, washers of insulating substance being interposed between the plate and the box, as shown in 2. In this way the frame of the lamp is kept entirely out of the circuit. while the regulating mechanism may be readily removed from its case when necessary to repair or clean it.

The door 13 permits access to the upper-carbon carrier T and the holder connected therewith, and is used .for putting in fresh carbons, adjusting, and similar purposes. The lower carbon is reached by turning the ring H and lowering the globe G, attached thereto.

In the bottom of the globe G is a small opening, through which the dust and particles of carbon may be brushed without removing the globe from its holder. A small cup, 0, of metal or wood, is suitably titted over the opening, to collect the particles of carbon that drop during the burning of the lamp. This device also serves as a receptacle for the negative carbon when a double length is inserted in the holder.

The openings formed in the circular frame E are designed for a special purpose. \Vhen the lamp is used in positions where its light is only needed below, the open spaces in this frame are filled with silvered reflectors. When the light is needed above as well as below, for the silvered plates are substituted lenses or plain glass plates. In this lamp the circuit is formed by a wire from one terminal to the plate N, including the coils of the main magnet or helix. From plate N the current passes to the upper carbon, and from the lower carbon it passes to the rods F, from whence it is led by an insulated wire, w, to the other terminal of the lamp.

The construction of the frame and other parts above described secures many advantages not heretofore attained. The lamp may be safely and continuously used in the most exposed positions. since it is entirely protected from the weather. It may be taken apart readily and constructed cheaply, and no difficulty or risk is encountered in its manipulation.

hat I claim as new and of my invention 1. The combination, with the frame of an electric lamp and a box or casing attached to or integral therewith, of feed mechanism contained within the casing, and a plate or supporting base for the feed mechanism, the said plate being separable or detachable from the casing and insulated therefrom, as and for the purposeset forth.

2. The combination, with the box or casing containing or inclosing the feed-regulating mechanism, of bars or rods depending there-- from, a metal casing or plates secured to the rods, and carbon and globe holding devices attached to and supported by the rods, substantially in the manner set forth.

3. The combination,in an electric lamp. with a box or casing and frame depending therefrom, of a rod or rods supporting the lowercarbon holder, attached thereto, and a globeholder consisting essentially of a flanged ring provided with guides g g and pins L L, registering with catches on the lamp-frame, substantially as and for the purpose set forth.

4. The combination, with the metal box or casing A, the bars B B, and globe-holder attached thereto, ot' a metal plate, N, secured to and insulated from the bottom of box A, and feed mechanism, substantially such as described, mounted on the plate, as set forth.

5. In an electric lamp, the combination, with a box or casing inclosing the feed-regulating mechanism, and a frame or tube depending therefrom and surrounding the upper-carbon carrier, of a ring, E, and connecting-pieces 0, having open spaces adapted for the reception of translucent or reflecting plates, substantially as described.

6. The globe surrounding the carbons and supported from above, in combination with a cup or similar receptacle, 0, fitted over an opening in the globe, substantially as set forth.

In testimony whereof I have hereunto set my hand this 25th day of August. 1882.

EDWARD WESTON.

Witnesses HENRY A. Bnortnnvnn, HENRY HINE.

TIO 

